Nayjest\Grids\ObjectDataRow::extractCellValue PHP Method

    protected function extractCellValue($fieldName)
    {
        if (strpos($fieldName, '.') !== false) {
            $parts = explode('.', $fieldName);
            $res = $this->src;
            foreach ($parts as $part) {
                $res = data_get($res, $part);
                if ($res === null) {
                    return $res;
                }
            }
            return $res;
        } else {
            try {
                return $this->src->{$fieldName};
            } catch (Exception $e) {
                throw new RuntimeException("Can't read '{$fieldName}' property from DataRow", 0, $e);
            }
        }
    }